package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes()); //进行md5加密，然后再进行比对

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {

        System.out.println("EmployeeServiceImpl.java 当前线程id" + Thread.currentThread().getId());

        Employee employee = new Employee();

        //对象属性拷贝，源employeeDTO——>目的employee，只要属性名一致，就可以
        BeanUtils.copyProperties(employeeDTO, employee);

        //下面在设置一下employee中有,但是employeeDTO中没有的属性//

        //1设置账号状态,默认正常为常量类中的StatusConstant.ENABLE：1
        employee.setStatus(StatusConstant.ENABLE);
        //2设置默认密码为常量类中的PasswordConstant.DEFAULT_PASSWORD：123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        // 以下这些公共属性已经通过自定义注解@AutoFill和自定义切面类AutoFillAspect实现了
//        //3设置createTime
//        employee.setCreateTime(LocalDateTime.now());
//        //4设置更新时间updatetime
//        employee.setUpdateTime(LocalDateTime.now());
//         //
//        //5设置当前记录创建人的id和修改人的id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> records = page.getResult();

        return new PageResult(total,records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrstop(Integer status, Long id) {
        //update employee set status = ? where id = ?

        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);

        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee=employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
    * 编辑员工信息
    */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //因为传过来的是employeeDTO类型，而之前开发过的employeeMapper.update()需要传入一个employee类型
        //所以使用下面的的属性拷贝可以把前端传过来的employeeDTO按照属性名字去赋值到employee类型中去
        BeanUtils.copyProperties(employeeDTO, employee);

        // 以下这些公共属性已经通过自定义注解@AutoFill和自定义切面类AutoFillAspect实现了
//        employee.setUpdateTime(LocalDateTime.now()); //这里需要自己设置一下更新时间
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);

    }
}
